Abrasive applying machine



Aug. 29, 1933. O DQUTT 1,924,487

ABRAS IVE APPLYING MACHINE Filed Feb. 14, 1950 5 Sheets-Sheet l Aug. 29, 1933.

Filed Feb. 14, 1930 0 ABRAS IVE APPLYING MACHINE 3 Sheets-Sheet 2 I A? 2/ 7'8 F Aug. 29, 1933. o. DOUTT 1,924,487

ABRASIVE APPLYING MACHINE Filed Feb. 14, 1950 3 Sheets-Sheet 3 i Patented Aug. v

' I I I 'E K AIIN M lin v v OWen Doutt,'Detro'it, Mi c h., alssignqpto G Spring Bumper Corporation, :Detroit, uMich.-, .a t

t 130 Claimsf This invention relates toev machine adapted .tobe used in applying abrasive to the periphery of grinding wheels; Grinding wheels of thetype in connectionf with which this machine is tofbe used are-employed in finishing bumper bars and analogous uses; In preparing the wheels for use frods 31 are pivotallyconnectedcentrally to the theyrare first coated'with glue orother suitable adhesive material andthen pounded-intoa receptacle containing. the abrasive 'material, Usually t a number of coats of the abrasive materiahare applied but this is optional; After the wheels v cups will be provided in connection with the upare coated, they are used for grinding purposes 7 :un-til the abrasive material isjwornl off or dis 7 lodged, after which they maybe againw-coated v by a pr0cess invo1ving the use of thernachine' which embodies this invention, .7 It has beenfound in practice that themost desirable method of applying the' abrasive mate- .rial is by pounding the periphery of the gluee 7 v V r spaced a sufiicient distance .to' allow the wheels to be introduced therebet ween. On eachxlegof coated wheelinto'a mass of the abrasive. )Ac, cordingly, the principal object of this invention [is to provide a machinewhich shall carry the grinding wheels and impart to them amotion with respect to a receptacle of abrasive material '25 which shall result in pounding the periphery'of the Wheel into such material. 3 V e v A further object 'is to provide a machine for a v accomplishingthis general purpose whichjshall be convenient 'in' use, enabling larger production ,30 per man to be secured (about three -tim es that .7 of a man operating without theassistanceof a ;machine) and to secure anassembly which shall besturdy and-durable; Other and more specific objects will become apparen't from the following r i lu a, i I e Referring to the drawings, Fig-1' isa side ele;

vation of g a 'machine embodyingmy invention;

- Fig; 2' is a front elevation of the saline showing certain ,parts omitted; view thereof. 7 a p a I have shown the drawing's' a machine in- Fig. 3 isfa top plan 5 eluding a suitable iramedsig-nated generally by V the numeral ;10, and ernbody i ng upright memhers, suitable bracing members,'-a*fioor 1 1 adapt-" ed to support a receptacle JZ cOntaining abrasive 1 ymounted a driving motor 14., 'Mounted on-the frame member; 1 5 are bearing members-16in carrying at the ends crank portions 28.

ed to the crankipinsiil jbymeans of bearing rnem- 1 'by said rocker arms and forming withthe iupperf" I friction and also for keeping the bearingsflushed ithgreaseto tpreventthe abrasive material from "working into them; y

j iflheroekenarrns 29;are'connected bymeans of;

arms 29 I provide'an arbor receiving meansWhich consists of the 7 member 4OQand a resilient spring upperportion of the groeker, ar and the point 'materiaL-and a floor 13. upon' which' may be '49 thereon ,to constrain motion in aldownward -25 is a a crank shaft: carries centrally thereof a:gear 27; nieshing withthe pinion-l3 and" ,A pairof rocker arms 29f'are pivotally connect hers SOattached to said rocker arms. Aip ai'r of rocker arm as at 32 bygme'ans of bo1ts331carried portions; 34 of Y therods 3 1 suitab1e bearingl members. It isto be understood that suitablegrease per ends 34 whereby these hearings "may be kept lubricated both for e the purpose of preventing a U-shapedmember 36 which has thelegs thereof the Ushapedirien 1ber iscarried a guiding finger. :37-which istadapted to ,contact with the -sides of a the wh ee'ln38 to'hol'd thejsamemcentrally dis I posed. Carri ed on the uppervsurfacesofthe'rocker member 4i on eachsaid arm carrying at its oute'r end aconically pointed retaining member .42" se ouredby vmeansof a nut 43. Thememberjiods I provided with a' recess atone endv'thereof -to receive apportion-of the member 42. 'Ihememberj 42 is'made of hardenedsteel to preventits wea r-'- ing awayrapidly because of the vpresence of the g abrasive material, some of which inevitablykfinds V its way into this mechanism It wil1 ,be-evident by v "referring-to Figfithat the arbor 45 canbef'intro du'ced by simply thrusting. the same between the of the member 42; thefconical face thereof acting as a cam to cause-flexing ofwthe member 41 and alsothat a similar camming action on the 2 p posite face of the member 42 may be reliedupon for w-ithdrawing' the arbonfrom the retaining means. I P-ivo ted ontheframe 10'at 46 is a lever 47 which carries a-cros's -member' lii. 'l 'he leversd'l are pro vided with openings to receive the flower; endsoi therods 3 1, whicht rods; are provided with collars direction,

I j Attached to thelfront frarne were;

plates 50 which havenotchesi5 in the-edgfi'thereof to greceive a; cross rod 52 upon which the -f-ront ends ofthe levers 47"are adapted to resti-"Pivoted v V at 52 on the frame is a foot lever "53connected by means of a link 54-110 the lever 47 The dotted lineA a portion of the envelope on said frame; said shaft carrying spaced cranks, I

' of the positions of the periphery of'the' Whfil' 38,

that is the locus of a point thereof moving in the receptacle 12. e a In the operation of this machine, the arbor 45 carrying the Wheel 38, properly glued, is thrust levers described, driven through the crank shaft by means of the motor, in such a, mannera'sto give a poundingaction to the wheel, which action results in embedding the abrasive material inthe glue in such a Way that the sameis firmly held and gives long grinding wear as compared with 'methods'of applying the abrasive which do not"; a v

coated grinding whee1,-a frame, a shaft mounted involve the pounding action, insofar. as; am aware. When it is desired tojinsert the wheel,-the

operator steps on the foot lever'5S,which results in elevating the rod 31 and "consequently the rocker arms-'29 toaposition in which the wheel may be inserted without 'any interference from the abrasive material inthe receptacle 12. i The adjusting slots-5l as well asthe' adjustablejfeature'iofthe collar e9,providefor-adjustment to, 7 accommodat'ewheels of different'si'zesand to vary the force of the pounding blow; 7 It has been found 30 in practice, after considerableexperimentation, thatth'e'pounding action of this machine serves to embed the abrasive particles in smegma so thoroughly'that the same are inmany cases more arms with respectto said frameand means car- 1 4. In a machine forapplying abrasive to a glue coated grinding wheel, a frame, a shaft mounted a pair of rocker armspivoted'on said cranksgmeans for constraining'downward motion ofeach of said ried by said arms for receiving an arbor of a grinding wheel. a e

5. In a machine for applying abrasive to a glue coated grinding wheel, a frame, ayshaft' mounted onsaid frame, said shaft carrying spaced cranks,

a pair of. rocker arms pivoted on saidcranks,

means'for constraining downw'ardmotion of each of said arms with respect to said frame, means carried by said armsfor receiving an arbor of a grinding wheel, and'a bar rigidly connecting said r V x 6. In a machine'for applyingabrasive to a glue on said frame, said shaftcarrying spaced'cranks,

ap'air 'of rocker-arms pivoted onisaid cranks;

meansfor constraining downward motion of each of said arms with respect to said frame, means carried by said arms for receiving an arbor/of a grinding wheel, and, a- U'-shaped bar rigidly'c'on than two-thirds covered bya" closely adhering V have provided an abrasive applying machine; which iswell adapted for'i'ts intended pnrpose,

and while Ifhave illustrated one embodiment lth'ereof, it is evident that myiinvention'in its broader'aspectsmay becarried out'in anumber of variant fo'rms,'and I-wish to be limited only in accordance with the scope of the appended claims and the requirement's of theprior art;

Havingthusfidescribed my invention, what I claim is: I I a I l 1. Amachinefor'applying abrasive to a grinding wheel, said machine including-means forsupporting saidwheel with respect to amass of abrasive material, means for holding said abrasive material, and means for giving to said supporting meanssuch a motion, with respect'thereto that ing Wheel, said machine including means for free 1y, rotatably supporting saidwheel with'respect wheelf t I the periphery of "said wheelis pounded into such abrasive material andgiven a rolling motion.

necting said arms.

'a'piair of rocker arms "pivoted on said cranks,

means for constraining downward motion of each of said arms with respect to said frame, means "7 In a machine for applyingabrasive to glue, coated grinding WheeL-a=frame,-'a1'shaftmounted carried by said arms for receiving an arborof a grinding wheel, a U-shaped bar rigidly con- 1 necting said arms, said. U-shaped bar-having the legsthereof spaced apart a distance greater than thethicknessof the grinding wheeLandguiding fingers carried by said legs on said frame, said shaft carryingspaced cranks, a"pair of rocker arms pivoted on said cranks, means for constraining downward motionjof each of said arms with respect to said frame, means carried by saidarms' for receiving and resilient 'guiding fingers carried by said legs;

' 2. A machine for applying abrasive :to a grindto a mass of abrasive material, means for holding said abrasive material, and means for giving'to said supportingmeans' such a motion with respect thereto that the periphery of saidwheel is pountl-.

' Jed into such abrasive material and givenarolle ing motion. 7

V 3. In a machine for applying an glue coated grinding wheel, a framef'a crank mounted ongsaid frame, motor means for driving said crank,- a rocker arm connectedto said crank,

. a supporting bar pivotedto said rocker'arm at a "point spaced from the point of connection'of said crank, means for constraining the motion of said.

bar with-respect to said frame, and means carried by said arm for receiving an, arbor of a grinding abrasive to a I an arbor of a grinding wheel, a U shaped bar adapted to contact, ,thesides of said wheel. Y

8. In a machine for applying'abrasiveto'a glue coated grinding wheel, a framega shaft mounted I rigidly connecting said arms, said U-shaped bar having the legs thereof spaced apart a distance] greater than the 'thickne'ssrof the grinding wheel,

adapted to contact the sides of said'whe'el.

9; In a machine forapplying' an abrasive- "to q 1 a a glue coated grinding wheel; a frame; a crank mounted on said frame, motor,means'ferdriving said crank, a rocker arm connected to said crank,

a bar pivoted 'to said rocker arm at a point spaced Y fromthe point' of connection ofsa'id crank,'means for constraining the rnot ionlof,- said bar with respect to said frame, means carried by said arm for receiving 'anarbor of-a' grindingwh'eel, said constraining means'inclnding a lever mounted on said frame'pand carrying means for] receiving the lower end of said bar, said bar carrying a collar to cooperate withsaid'last-means. I 10.- In a machine'for applying-an abrasive to a'g'lue coated grinding wheel, a frame a crankj mounted onsaidfrarne notor means for driving 4;; f

said'cr'ank, a rocker arni connected to said crank, afbanpivote'd to saidzrccker' armat a point spaced from the pointofjconnection of said crank, means for constraining the motion of said 'b'ar with resp'ect'to said f menieans car 'ried' by. said arm forreceiving anarbor of a grinding wheel, said constrainingmeans including a lever mounted on said frame, carrying means for receivingthe lower end of said bar,said bar carryi'n'ga collar to cooperate with said last mentioned means, .said lever being pivotally mounted at one end, and an adjustable "stop for limiting its downward pivoting. i

11. In a machine for applying an abrasive to a glue coated grinding wheel, a" frame, a'cr'ank tervals with uniform pressure,

i pounding the periphery of' thewheel into the mounted on said frame, motor'm'eans for drive ing said crank,-a,rocker arm connected-to said crank, a bar pivotedto said rocker arm at a point spaced from the point of connec'tion' of said crank, means for constraining thBvl'IlOtlQll of said 1 bar with respect to said frame, means carried 15 by said arm for receiving an arbor of .a grinding wheel, said constraining means including a lever v moui1ted on said frame, carrying means for receiving the lower end of said ban said bar carrying a collar to cooperate with said last mentioned means; s aid lever being pivotally' mounted at one end, an adjustable stop for limiting its 12. A machine for applying abrasive toa grinding wheel, said machine including means for sup-v porting said wheel with respect to amass of abrasive material, means for holding said abrasive material, and means forgiving to said supporting means such a motion with respect thereto that the periphery of said wheel is pounded into such abrasive material."

13. The method of applying abrasive to a grinding wheel, comprising: coating the. periphery of the wheel with a sticky substance and pounding at regular intervals contiguous portions of the periphery thus coated into a, mass of abrasive material. v v '14. The methodof applying abrasive toa'grinding "wheel, comprising: coating the periphery of the wheel with a sticky substance and pounding contiguous portions of the periphery thus coated into a mass of abrasive material at regular in- 15. The method of applying abrasive to a grind: ing wheel, comprising: coating the periphery of the wheel witha sticky substance and intermittently contacting contiguous portions of the pe,

; riphery thus coated with a mass of abrasive ma for actuating said rocker;said*rockerjhaving terial with uniform pressure.

16. Themethod of applying abras1ve toa grindg ing wheel, comprising: coating the periphery'of the wheel with a sticky substance and rolling anding wheel, said machine including means for holding a mass of abrasivematerial, means for supporting a grinding wheel in juxtaposition to the abrasive material, and instrumentalities for grinding wheel, saidmachine including means for holding abrasive material, means for releasablyand loosely holding a grinding wheel in jux taposition to the abrasive material, whereby said wheel is freely rotatable relative to the holding means, and instrumentalities for pounding aporf tion 10f the peripheryof the wheel into said 'ma-,

terial with a sweeping movement, whereby the material will cause said wheel to turn so that when the wheel is next presented a different por gmaterial; V v 19-r 'jIn a machine'jforap ylllg 31n1a bl aSie t0 fa glue coated grindingiwheel, arocker, means'for actuating said rocker, Isaid rocker having means for-holding a g'fiiidingi wheel, and means for, supmass of 'abrasive'inaterial-A' 1 said material is to'befappliedL,

tion of its periphery-Willi) pounded into the portingk'a 'mass'of'abrasive material juxtaposed to theiwheel thusfheld',-whereby upon'actuation of said rocker, the'wh'eel will ,be'pounded into the porting afniass of 'abrasive material juxtaposed to the wheel thus [heldjwhe'reby upon actuation of-said"rocker, the" wheel will-j be pounded- ,into the mass of abrasive material, the wheel being loosely carried bythe rocker, whereby the wheel will be-pounded intp said material witha rolling action."

52 1. 'In a machine for-applying an abrasiveto Q a glue j'c'oate'd' grinding 'wheel,= arocker, means for actuating said: ro'ckerQ said rocker having means for holding a grinding wheel; and means; for supporting a mass of abrasive material jux- 'taposed to the wheel" thus held, wherebylupon actuation of said rocker,.the wheel will be pound-" ed into-the mass of abrasive material, a movable, support for said rockenand means for adjusting"- said support relative 'to said, material to accom modate different sizes of grinding wheels to which"= v22. Ina machine for applying an abrasive to a glue coated'grinding'wheel, alrocke g meansfor actuating said rocker,fsaid rocker having" means for holdinga grinding wheel, and means for supporting a mass of abrasive materialjux taposed to the wheel-thus held, whereby, upon ed into the massof abrasivematerial', andurneans for varying the relative position' o'fsaid material and the grinding wheel, whereby said abrasive may be applied to different sizes of: wheels; and said material'maybe applied to wheelsjof the samesizeeventhough varying quantities or abrasive material may be employed; l

, i .23..In";a machine for applying .an abrasivet a glue coated grinding wheel, arocker, meansi g means. for 1 holding a, grinding wheel, and means for supporting a mass or abrasive powder, juxed into themass of abrasive powder 24. In amachineof the class described, means for sllp ortinga wheelfto-"whi'ch abrasive ma-l l I terial is toqbe"appliedgfsaidfmeans providing a d v bearing ofsubstantiallyfl U-shape into and from which the 'arbor of thewheel may be freelyinserted 'and 'removed, yand resiliently; mounted means engageable with saidarbor to releasably holdjthe samein; said bearing, said arbor serving to canri the last namedlmeans j away from the path of movement ofthef arbor upon application and whereby said lastna'ined means willhold the arbor in its bearing against accidental removal.

25. In a machine for applying an-I abrasive to aglue coated grinding wheel, a rocker, means for actuating said'rocker," said rocker k having belt and 'gear means "for holdingza grinding wheel, andmeans for supporting a mass of abrasive ma? for supporting a mass of abrasive material jux-' fio 'terial juxtaposed to the wheel thus held, whereby upon actuation of said rocker, the wheeljwill be h pounded'into the'mass of abrasive ,material.

26, In a machine for appiyinganj-abrasive to a glue coated grinding wheel, a'rocker, belt means for; actuating; said rocker said rocker having means for holding ,a grinding Wheel, and means taposed to the wheel thus'held, wherebyupon actuation of'said rocker, the wheel will be'pounded into-the mass of abrasive material.v

Q27. In a machine for applying anabrasive to a glue coated grinding wheeLa rocker,vge ar means for actuating said rocker, saidrocker having means for holding a grinding-wheel, and;m eans for supporting amass of abrasive-material jux-' taposed to the Wheel thus held,. whereby upon actuation of said rocker, the wheel will, be

pounded into the mass ofabrasive material. 3

28.;A machineior applyin g abrasive ma glue coated grinding element, saidvmachine including means for holdingfa mass, of abrasive material,

a device for-"supporting a grinding element in operative relation to the abrasive materiaL-means said material.

for shifting the elementjlinto' an inoperative position to facilitate-itsremoval and attachment of another element, and instrumentalities for pounding the periphery of the element into the abrasive material; e

29. In a machine for applying'abrasive material toa' grinding element prepared to receive the same; a support for a grinding element, means for supporting a massof, abrasive material jux- I taposed tothe element thussuppo'rted, an oscillatory device supporting said support, and means for I simultaneously oscillating said support and :said

device, whereby said element will be pounded into 30. In a machine for'applying an abrasiveto a grindingelement prepared to receive the same, a

support for a" grinding element, means forfsup- 

